web.config / Global.asax中的自定义错误处理不处理不存在的目录

<httpErrors errorMode=\"Custom\">
        <remove statusCode=\"500\" subStatusCode=\"-1\" />
        <remove statusCode=\"404\" subStatusCode=\"-1\" />
        <error statusCode=\"404\" subStatusCode=\"-1\" prefixLanguageFilePath=\"\" path=\"/*****.aspx\" responseMode=\"ExecuteURL\" />
        <error statusCode=\"500\" subStatusCode=\"-1\"  prefixLanguageFilePath=\"\" path=\"/*****.aspx\"  responseMode=\"ExecuteURL\"/>
    </httpErrors>

    added this to the global.asax to stop IIS from handling my 500 errors
    after @Kev\'s suggestions IIS handled my 500\'s these lines fixed that
    HttpApplication myApplication = new HttpApplication();
    myApplication.Response.TrySkipIisCustomErrors = true;

web.config

global.asax

global.asax

Application_Error

HttpContext

Server.Transfer()

http://www.example.com/whatever/hmm.aspx

web.config

global.asax

.aspx

<customErrors defaultRedirect=\"~/******.aspx\" mode=\"On\" 
              redirectMode=\"ResponseRewrite\">
    <error statusCode=\"500\" redirect=\"~/*****.aspx\" />
    <error statusCode=\"404\" redirect=\"~/*****.aspx\" />
</customErrors>

    <httpErrors errorMode=\"Custom\">
        <remove statusCode=\"500\" subStatusCode=\"-1\" />
        <remove statusCode=\"404\" subStatusCode=\"-1\" />
        <error statusCode=\"404\" subStatusCode=\"-1\" prefixLanguageFilePath=\"\" path=\"/*****.aspx\" responseMode=\"ExecuteURL\" />
        <error statusCode=\"500\" subStatusCode=\"-1\"  prefixLanguageFilePath=\"\" path=\"/*****.aspx\"  responseMode=\"ExecuteURL\"/>
    </httpErrors>

protected void Application_Error(Object sender, EventArgs e)
{
    // At this point we have information about the error
    HttpContext ctx = HttpContext.Current;

    // set the exception to the Context 
    Exception exception = ctx.Server.GetLastError();

    // get the status code of the Error
    int httpCode = ((HttpException)exception).GetHttpCode();

    // get the IP Address
    String strHostName = string.Empty;
    String ipAddress_s = string.Empty;
    strHostName = System.Net.Dns.GetHostName();

    System.Net.IPHostEntry ipEntry = System.Net.Dns.GetHostByName(strHostName);
    System.Net.IPAddress[] addr = ipEntry.AddressList;

    for (int i = 0; i < addr.Length; i++)
    {
        ipAddress_s += \"IP Address {\" + (i + 1) + \"} \" + 
                            addr[i].ToString() + Environment.NewLine;
    }

    // setup the error info one for user display and one for the DB Insert
    string errorInfo =
       \"<br /><b>Error Location:</b> \" + ctx.Request.Url.ToString() +
       \"<br /><br /><b>Error Source:</b> \" + exception.Source +
       \"<br /><br /><b>Error Try/Catch:</b> \" + exception.InnerException +
       \"<br /><br /><b>Error Info:</b> \" + exception.Message +
       \"<br /><br /><b>Status Code:</b> \" + httpCode +
       \"<br /><br /><b>Stack trace:</b> \" + exception.StackTrace;
    string errorInfoDB =
       \"||Error Location: \" + ctx.Request.Url.ToString() +
       \"||Error Source: \" + exception.Source +
       \"||Error Try/Catch: \" + exception.InnerException +
       \"||Error Info: \" + exception.Message +
       \"||HttpErrorCode: \" + httpCode +
       \"||Stack trace: \" + exception.StackTrace +
       \"||IP Address: \" + ipAddress_s;

    // clean the input befor you put it in the DB
    char quote = (char)34;
    char filler = (char)124;
    char tick = (char)39;
    char greaterThan = (char)60;
    char lessThan = (char)62;
    errorInfo = errorInfo.Replace(quote, filler);
    errorInfo = errorInfo.Replace(tick, filler);
    errorInfo = errorInfo.Replace(greaterThan, filler);
    errorInfo = errorInfo.Replace(lessThan, filler);

    errorInfoDB = errorInfoDB.Replace(quote, filler);
    errorInfoDB = errorInfoDB.Replace(tick, filler);
    errorInfoDB = errorInfoDB.Replace(greaterThan, filler);
    errorInfoDB = errorInfoDB.Replace(lessThan, filler);

    string pattern = string.Empty;
    string replacement = \"sQueEl\";
    pattern = \"/cookie|SELECT|UPDATE|INSERT|INTO|DELETE|FROM|NOT IN|WHERE|TABLE|DROP|script*/ig\";
    errorInfoDB = Regex.Replace(errorInfoDB, pattern, replacement);

    pattern = \"/cookie|select|update|insert|into|delete|from|not in|where|table|drop|script*/ig\";
    errorInfoDB = Regex.Replace(errorInfoDB, pattern, replacement);


    if (httpCode == 404)
    {
        InSert_To_DB_Class(*****, *****, *****, *****, *****, errorInfoDB);
    }
    else
    {
        InSert_To_DB_Class(*****, *****, *****, *****, *****, errorInfoDB);
    }

    // set the error info to the session variable to display to the allowed users
    Application[\"AppError\"] = errorInfo;

    // clear the error now that is has been stored to a session
    ctx.Server.ClearError();
    ctx.Response.ClearHeaders();
    // set the status code so we can return it for SEO
    ctx.Response.StatusCode = httpCode;
    ctx.Response.TrySkipIisCustomErrors = true;
    HttpApplication myApplication = new HttpApplication();
    myApplication.Response.TrySkipIisCustomErrors = true;
    try
    {
        if (ctx.Request.RawUrl.Contains(\"/*****\"))
        {
            // redirect to the error page
            ctx.Server.Transfer(\"~/*****.aspx\", false);
        }
        else if(ctx.Request.RawUrl.Contains(\"/*****\"))
        {
            ctx.Server.Transfer(\"~/*****/*****.aspx\", false);
        }
        else
        {
            // check the httpCode
            if (httpCode == 404)
            {
                // set the page name they were trying to find to a session variable
                // this will be cleared in the ****** page
                Application[\"404_page\"] = exception.Message; 
                // redirect to the 404 page
                ctx.Server.Transfer(\"~/*****\", false);
            }
            else
            {
                // redirect to the error page
                ctx.Server.Transfer(\"~/*****\", false);
            }
        }
    }
}